Universal mounting for road



Dec" 17, 1946. H. c. FRENCH 2,412,574

UNIVERSAL MOUNTING FOR ROAD MACHINE MOLD BOARDS Filed Dec. 20, 1943 2 SheetsSheet l INVENTOR. J 64 /zmaL, BY

Dec. 17, 1946. H. c. FRENCH 2,412,574-

UNIVERSAL MOUNTING FOR ROAD MACHINE MOLD BOARDS Filed Dec. 20, 19,43 2 Sheets-Sheet 2 INVENTOR.

A TTOR/VEMG /enera I Patented Dec. 17, 1946 MACHINE MOLD BOARDS Henry 0. French, Elm Grove, Wis., assignor to The Heil 00., Milwaukee, Wis., a corporation of Wisconsin Application December 20, 1943, Serial No. 514,950

7 Claims. (Cl. 37144) This invention relates to improvements in universal mountings for road machine mold boards. Certain types of road machines, such as trailbuilders, have their blade-carrying mold boards arranged for universal movement. Due to the massive nature of the parts and the necessity for unusual strength and rigidity, as well as accessibility for repairs, replacements and adjustments, the matter of providing an effective universal mounting for a mold board or blade presents a problem which has been effectively taken care of in the present invention by a commercially practical structure.

A further object of the invention is to provide a universal mounting for a road machine mold board which includes an A-frame formed of a pair of complementary, identical interchangeable arms which permits knock down of the unit for shipment and storage and a resulting saving in space and bulk.

A further object of the invention is to provide a universal mounting for a road machine mold board which embodies easily manufactured sturdy elements susceptible of simple assembly or disassembly.

A further object of the invention is to provide a universal mounting for a road machine mold board which is of very simple construction, which is highly eilicient in operation, which is strong and durable, which is relatively inexpensive, and which is well adapted for the purposes described. With the above and other objects in view the invention consists of the improved universal mounting for road machine mold boards, and its parts and combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawings in which the same reference characters indicate the same parts in all of the views:

Fig. l is a perspective view of a trailbuilder equipped with the improved universal mounting for its mold board;

Fig. 2 is an enlarged, fragmentary plan view of the forward portion of a trailbuilder provided with the improved universal mounting for its mold board, a portion being broken away and in section;

, Fig. 3 is a fragmentary, rear perspective view of a road machine mold board showing a pivot bracket in detached relation thereto;

Fig. 4 is a fragmentary perspective view of a trailbuilder mold board and the complete. universal mounting between it and the companion A-frame arms of the trailbuilder; and

Fig. 5 is an enlarged detail sectional view taken on line 5-5 of Fig. 2.

Referring now more particularly to the drawings it will appear that a certain type of road H as a trailbuilder, is designated 8. In so far as the present invention is concerned it will not be neces' sary to refer to the details of construction of the trailbuilder. Sufiice it to say that it is equipped with a forwardly projecting A-frame 9 whose inner ends are pivotally mounted on side mounting brackets ill with pivotal movement 'of the, A-frame in a vertical plane being effected and controlled by a cable system i l. p 1

The invention has to do particularly with the universal mounting for a front mold board I2, the latter carrying or having its lowerlongi-j tudinal edge formed as a cutting blade [3. In addition to the swinging movement imparted to the mold board and cutting blade through the pivotal mounting of the A-frame, whereby the blade may be raised and lowered relative to the ground being worked over, the mold board is susceptible of universal movements or adjustments relative to the A-frame 9.

The A-frame 9 is composed of a pair of com-i plementary and interchangeable arms l4. The forward end of each arm rigidly carries on its top and bottom faces projecting spaced apart plates [5. When the arms M are in assembled relation to provide an integral A-frame, the forward ends of the arms 14 have their respective top and bottom plates I5 in lapping relationship, as best shown in Fig. 4, being connected together and to another element later to be described, by a vertical pivot bolt IS.

The rear face of the mold board [2, intermediate the ends thereof, is formed with a plate portion I! having upper and lower flanges l8, which flanges are formed with arcuate grooves I9 described on a radius emanating from a recess 20 which is located in the plate portion l5 midway between the flanges l8. 7

Adapted for cooperation with the plate portion I1 is a pivot bracket 2| which includes a pivot plate 22, corresponding in size and shape to the plate portion l1 and having curved upper and lower edges corresponding to the curvature of the grooves I9. The outer face of the pivot plate 22 has welded thereto a massive block 23, having therethrough a vertical bore 24 to receive the previously mentioned pivot bolt I6. Extending forwardly from the inner face of the pivot plate 22 and centrally located with respect thereto, isa pivot stud 25 adapted to be received within the opening 20 in the mold boar-d plate portion l1.

Prior to assembly of the mold board mounting elements, the arms l4, constituting the A-frame 9, may be disconnected, and for shipping and storage they may be disposed very compactly, occupying considerably less space than if the A-frame were an integral structure. The divided construction of the A-frame also makes for ease in disassembling the mold board carrying structure for convenience in repairs, adjustments and replacements. Likewise the pivot 2,412,574 r ,g I,

bracket 2! is readily removable from the assembly. When the parts are to be assembled the pivot bracket 2] is'held adjacent the i'riold board' plate portion H in a position at right angles to that shown in Fig. 3. However, the pivot" stud 25 is engaged in the aperture and then the entire pivot bracket is turned through an are so as to engage the curved extremities of the pivot plate 22 within the arcuate recesses; l9, as shown in Figs. 4 and 5. Tnerearter'tne forward ends of the A-frame arms I 4 are brought together with their flanged plates 15 iii'lapping" relationship and also disposed so as to embrace opposite ends of the block 23 of the pivot bracket. Registration of the apertures in the arm plates or tongues should be eifected and the same are also brought into registration with the vertical bore 24 in the block 23, whereupon the pivot bolt I6 is inserted to join all of the parts. v

With the mold board I? then mounted as above described, it is obvious that the mold board may be turned or swung on the pivot bracketcarried stud 25. The curved grooves l p'erm'it this movement relative to the pivot plate 22 which is stationary. The movement described permits angular adjustments of the mold board in a vertical plane and transversely of the road or surface being worked on. I v

In addition to the pivotal movement just described, the mold board may be swung in a horizontal plane with the mold board and pivot bracket turning on the vertical pivot bolt I6.

During these movements or adjustments, exten-' sion arms 26, whose inner ends are slidabl'y or telescopically mounted on the side horizontal portions of the A-frame 9, may move compensatingly along said A=frame portion. The'forward ends of the extension arms 26 are pivotally connected to rear side portions of the moldboard l2, as shown inFigs. 1 and 2. V

From the'foregoing description it will be seen that the improved universal mounting for road machine mold boards is of very simple construc tion, possesses great strength and durability, permits ready assembly and disassembly of the parts, and provides for efficient universal movements of the mold board relative to the mold board mounting elements. The universal rnountingis,

furthermore, of practical and novel construction and is well adapted for the purposes described.

What is claimed as the invention is: r 1. In a road machine, a pair of angled, com plementary, interchangeable arms disposed with their forward ends in abutment across the front of the machine to form a frame and having rearwardly extended portions pivotally mounted on the machine on horizontal axes, a pivot bracket interposed between the" abutting forward ends of said arms, a vertically disposed pivot bolt connecting said portions of the arms together and to the pivot bracket, a mold board, and a detachable connection eifectin a pivotal mounting on a horizontal axis between the pivotbrac'ket and an intermediate portion of the mold board. 2. In a road machine, a pair of complementary, separable arms disposed with their forward ends in abutment across the front of the machine to form a frame and having rearwardly' extending portions pivotally mounted on the machine on horizontal axes, clevis means on the abutting ends of said arms, an independent, removable pivot bracket, a vertically disposed pivot member connecting a portion of said bracket to said clevis means, a mold board having recesses on itsinner face intermediate the ends thereof, and means on said pivot bracket removably engaging said mold board recesses and effecting a pivotal connection on a horizontal axis.

3. In a road machine, a yoke-like frame in- V cluding separable side arm portions pivotally mounted on the machine on horizontal axes and having their front portions extending across the front ofthe machine and meeting in abutting relationship, clevis means on said abutting frame arm portions, an independent, detachable pivot bracket including a bored block and a plate, a

' vertically disposed pivot bolt removably extended eflecting a-pivotal connection on a horizontal axis.

4. In a-road machine, a pair of angled, complementary interchangeable arms having their forward ends formed asclevises and-in mutual lapping engagement said armsforming a frame whose forwardportion is disposed across the front of themachi-ne and whose rearwardly dis posed portions are pivotally mounted on the machine on horizontal axes, a pivot bracket ineluding a bored block and a plate, a pair of opposite edge portionsof the plate being curved, a pivot member extended through the clevis portions of the arms and the bore of said block, a mold board having an intermediate portion of its inner face formed with spaced upper and lower shelves having curved'recesses therein and a socket between the shelves, the recesses in the shelves and the curved edges of the bracket plate all being described on a radius emanating from said socket,- and a pivot stud on said bracket plate removably engaging said mold boa-rd socket on an axis at right angles to the axis" of the block carried pivot member, said curved edges of said bracket plate being adjustably and removably engaged in said recessed 3 shelves;

5. In a bulldozer, the combination of: a supporting frame; a blade, having'a socket on the rearface thereof; an attaching member, a portion of which'when properly oriented being capable of insertion in the socket, and when otherwise oriented being incapable of removal therefrom but being capable of swivel motion therein, and another portion ofwhich when in the second above-mentioned orientation being capable of hinge connection with the supporting frame; and means for effecting such hinge connection.

6. ma bulldozehthe combination of: a U- shaped: supporting frame; a blade, having one member of a combined bayonet joint and swivel connection on the center of the rear face thereof; an attaching means comprising the other member of the bayonet connection; and a vertical pivot hinge connection between the attaching means and the frame.

'7. In a bulldozer, the combination of: a U- shaped supporting frame; a blade, havin the female member of a combined bayonet joint and swivel connection on the center of the rear face thereof; an attaching means comprising the male member of the bayonetconnection; and a vertical pivot hinge connection between the taching means and the frame.

HENRY o. FRENCH-1, j 

